drm/amdgpu: return -ENODEV to user space when vram is lost v2
below ioctl will return -ENODEV:
amdgpu_cs_ioctl
amdgpu_cs_wait_ioctl
amdgpu_cs_wait_fences_ioctl
amdgpu_gem_va_ioctl
amdgpu_info_ioctl
v2: only for map and replace cases in amdgpu_gem_va_ioctl
Signed-off-by: Chunming Zhou <David1.Zhou@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
index ec9774c..333413f 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
@@ -824,6 +824,7 @@ struct amdgpu_fpriv {
struct mutex bo_list_lock;
struct idr bo_list_handles;
struct amdgpu_ctx_mgr ctx_mgr;
+ u32 vram_lost_counter;
};
/*
@@ -1528,6 +1529,7 @@ struct amdgpu_device {
atomic64_t num_bytes_moved;
atomic64_t num_evictions;
atomic_t gpu_reset_counter;
+ atomic_t vram_lost_counter;
/* data for buffer migration throttling */
struct {
@@ -1914,6 +1916,8 @@ static inline bool amdgpu_has_atpx(void) { return false; }
extern const struct drm_ioctl_desc amdgpu_ioctls_kms[];
extern const int amdgpu_max_kms_ioctl;
+bool amdgpu_kms_vram_lost(struct amdgpu_device *adev,
+ struct amdgpu_fpriv *fpriv);
int amdgpu_driver_load_kms(struct drm_device *dev, unsigned long flags);
void amdgpu_driver_unload_kms(struct drm_device *dev);
void amdgpu_driver_lastclose_kms(struct drm_device *dev);